Punching machine



Sept. 15. 1925.

KILLINGSWORTH PUNCHING MACHINE" Filed May 31,

2 Sheets-Sheet 1 I INVENTOR. Jolm WfldlazgsworZ/z;

5 A TTORNE Y.

sew. 15. 1925 J.- W. KILLINGSWORTH uucnme MACHINE Filed May 31', 1924 2 Sheets-Sheet 2 I 'INVENTOR.

John WKL'llwgsworbg.

. ATTORNEY.

' about the edge thereof.

Patented Sept. 15, 1925.

PATENT OFFICE.

worm w. inrmneswonrn, or FITZGERALD, GEORGIA.

PUNCHING'MACHI'NE.

Application filed May 31,

To all whom it may concern:

Be it known that 1, JOHN 'VV. KiLLINcswoa'rrr, a citizen of the United States, re-

siding at Fitzgerald, in the county of Ben Hill and State of Georgia, have invented certain new and useful Improvements in Punching Machines, of which the follow- .ingis a specification; y I

This invention relates to-punching machines, and has for its primary object, the provision in a manner as hereinafter set forth, of a puhchingmachine particularly designed for punching springs for use upon locomotives and so. designed that hanger holes may be punched through the spring leaf cleanly, quickly and without burring the edges of the aperture. 7

This invention has for another of its objects, the provision of a punching device for use particularly for punching locomotive spring leaves, whereby, simultaneously with the punching of the hanger holes in the spring leaf, a centering hickey is pressed into the leaf, sothat upon the assembling of the leaves the hickey will interlock and thus bring the leaves in perfect alignment.

A still furtherobject of this invention is the provision, in a manner as hereinafter set forth, of an improved type of punch for use in connection with a machine of this design, which punch is so constructed as to give a shearing action upon the material 1 to form the aperture therein free of burs A further and final object of the invention is the provision, in a manner as hereinafter set forth, of a spring leaf punching machine of strong and sturdy construction, of easy operation, quick and accurate in action, and inexpensive to build.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming part of this specification with the understanding, that this invention is not confined to any strict conformity with the showing of the drawings, but may be changed and modified.

so long as such changes and modifications mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings:

r-+4 of Figure 1.

1924. Serial No. 717,016.

Figure 1 is a side elevation of the ma chine embodying this invention.

Figure'Q is a transverse sectional view upon theline 22 of Figure 1.

Figure 3 is a transverse sectional view upon the line 33 of Figure 1.

Figure 4 is a sectional view upon the line Figure 5 is a section taken upon the line. 5--.5 of Figure 3. r I

Referring now to the drawingsin detail wherein like numerals of reference indicate corresponding parts throughout the several viewsof the drawings, numeral 1 indicates a support of any suitable construction.

A base 2 of substantial length and width is provided, and this base is preferably formed of channel iron asindicated.

Extending upwardly from each end of the base iron 2 is a standard 3 also preferably of channel iron, and the upper end of .each of the standards 3 is bent inwardly at an obtuse angle as indicated are to provide the inwardly extending opposed arms 5. Thefree end of each ofthe arms 5 is formed to provide a flat plate 6 as'shown. Centrally supported in vertical position between the plates 6 of the 'arms 5 is a compressed air piston cylinder 7 having formed upon the Wall thereof bosses 8 to receive the inner face of the plates 6 which are secured thereto by the rivets or other appropriate securing'means 9. Removable plates 10 and 11, respectively, are secured by means of bolts 12 to the upper and lowerend of the cylinder to close the same, the upper plate 10 having an exhaust valve 13 and an air ,inlet pipe line 14 extending therethrough while the lower plate 11 has an exhaust valve 15 and an air inlet pipe line 16 entering therethrough and in addi tion a centrally positioned annular collar 17 is formed upon the face of this plate having a central bore therethrough and having an annular flange 18 at the lower edge 7 thereof. A packing gland 19 fits into said collar and is securedto the flange thereof by means of a bolt 20. 7

Working in said cylinder 7 is a piston '21 carrying a piston rod 22 which extends through said collar 17 and gland 19 and projects a substantial distance below the end of the cylinder '2'. i

. member indicated as awhole by the numeral 27. Thisclamp comprises a pair of yoke members 28 and. 29 respectively, the arms30 of one of the yoke membersbeing of greater length than the arms'31- of the other yoke and further being cut in to receive the arms 31 of the yoke 29 so thatthe outer faces of the arms 31 will be flush with the face of the arms of the yoke 28 as shown in Figure 2. When the yokes are in position about thev piston rod .22 bolt securing members 32 are passed through the arms to retain the clamp in. position. The extended ends of the arms 30 of the yoke-s8 are bifurcated as at, 33, and the furcations have formed therein horizontal aligned slots 34 to slidably receive therethrough pivot bolts 35 which pi'votally retain one end of tog le arms as betw n the fermions of the bifurcated end 33 of the arms 30.

Securedupon the inner face of each of the standards 3 is a plate member 37 from which extendsa pair of spaced ears 38 between which the other ends of the toggle arms 36 are positioned and pivotally held by means of a transversely extending bolt 39; Each of the toggle arms 36 has alongitudinally extending, series of apertures .40 there through, through which there is extended a securing bolt 41 which passes through a bifurcatedupper end 42 of a shear punch 43. The furcations of the bifurcated end 42 of the punch. 43 are as shown positioned one on each side of the toggle arms and pivotally heldin position by the aforesaid olt.

The shear punch'used in connection with this machine is a relatively liat el-ongated body as shown, the upper end of which is bifurcated as before stated and. the lower 1 end is cut in V-shapeas is indicated at 44 to provide the pointed cuttinginembers 45.

Due to the particular design of this punch,'

the double cutting edges shear throughthe body of metal much quicl'zer'and easier than with punches of the ordinaryconstruction.

It is to be noted that the brackets 37 which support the outer ends of the toggle arms 36 are positioned slightly below the clamp 27 when the piston 21 is in raised position I and the slots 34 in the arms 30' of the yoke 28 being slotted allow the pivot bolts 35 to reciprocate when the punch is'operated so that the toggle arms 36 move to a horizontal position when the punch is in operation and rise to an inclined position when not in use as shown in Figure 1. Extending beneath the punches 43 an between the standards 3 is a pair of channel irons-46 placed back to back and in spaced relation one to the other as shown in Figure 4. These channel irons are secured by means of brackets 471:0 the; standards and their top edges which are in the same plane constitute a die table for the machine. a Placed upon and extending lengthwise of the die table 48 provided by the parallel side edges of the channel members 46 is a die plate 49 having extending longitudinally along the rear edge thereof the raised portion 50 which constitutes a spring plate against the inner face of whichthe spring 51, when laced upon the die plate abuts to proper y position the spring upon the plate. Located intermediate the ends of the die plate 49 is a depression 52 which is ,directly beneath the point of the hickey punch 29 and into which the punch extends when the same depends toward the die plate.

Formed through each end of the die plate 49 is an elongated slot 53 which constitutes the die for the hanger hole which is to be formed in the spring 51 adjacent each end. This aperture or slot 53 in the die plate 49 iselongated as shown to receive the shear .work and which serves tostrip the work from the punch when the same is being withdrawn! n Securedupon the die table 48 at the forward part thereof is a pair of cams 56 having actuating handles 57 by means of which the cams are revolved to engage the edge of the spring which is placed upon the die table to force the same against the gauge 50 and at the same time retain the spring tightly in position after they same has been proplerly centered. I p

T e operation of the machine thus far de-' scribed is as follows: p Starting with thepiston 21 in 'raise d positi'on as shown in Figure l, a springleaf 51 is placed upon the die plate 49 and-arranged so that the ends of the punches will be directed toward that portion of the spring which is to be punched out. The arms 57 of the cams 56 are then swung until the cams have bound the spring tightly against the gauge 50 whereupon a valve 58 is opened toadmit compressed air from an 'to force the shear punches 43 through the spring leaf. At the same time that these punches are being forced through the spring, the hickey punch 25 engages the spring and forms a depression at the upper side thereof atthe same time pressing out a portion upon the under side of the spring. When the punches have passedthrough the spring body audit is desired to remove the same, the valve is closed. the exhaust valve 13 in the top. of the cylinder 7 is open, and the valve 60 is then opened to admit compressed air from the pipe 59 through the pipeline 16 andinto the lower portion of the cylinder 7 to raise the piston and piston rod and thus withdraw the punches from the work. It is to be noted that at the beginning of the operation, the lower exhaust valve 15 in the cylinder 7 is opened before the valve 58 is opened to admit compressed air into the top of the cylinder. This of course is closed after the piston has reached the limit of its downward stroke and before the valve 60 is opened to force the piston up again.

Sup orted upon one of the standards 3 upon the outer face thereof is a small cylinder 61 similar in construction tothe cylin der 7 this cylinder 61 having an exhaust valve upon the top as at 62 and an air inlet pipe line 63 extending through at its top and also having an exhaust valve 64 and an air pipe line 65 entering the bottom thereof. Located within this cylinder 61 is a piston 66, the rod 67 which extends from the piston 66 through the lower portion of the cylinder being pointed to provide a punch 68. Valves 69 and 70, respectively control the air pipe lines 63 and 64 which lead to the top and bottom of the cylinder.

Secured to the standard 3 beneath the cylinder 61 is a bracket 71 which supports thereon a die 72 which is located directly beneath the punch 68. This punch and die is for the purpose of forming hickeys in the center of spring plates of smaller size than those formed and punched upon the die plate 49 of the large machine. When all of the spring plates have been so punched by the hickey punch, the plates are very easily assembled, for, upon placing one upon the other the projected portion upon the under side of one spring plate will seat itself into the depression upon the top side of the next lower spring plate and the assembler will then know that all of the spring plates or leaves are in proper position. 7

From the foregoing description it is to be seen that a very novel punch machine is provided by which plates of heavy metal may be easily and quickly punched and at the same time so marked that upon assembling theyall will properly'align themselves.

Having thus described my invention what I claim is:

1. In a punching machine, a pair of spaced vertical standards having their upper ends inturned and in spaced opposed relation, a power cylinder supported vertically between said upper ends, a piston and piston rod working in said cylinder, said rod eX- tending through the lower end thereof, a I

die table comprising a pair of parallel spaced members positioned between said standards beneath said cylinder, a pair of toggle arms positioned above said table and having their outer ends pivotally connected to said standards and their inner ends slide ably and pivotally connected to said piston rod, and punch members pivotally secured to said toggle arms for vertical reciprocation above said table upon actuation of said piston and piston rod.

2. In a punching machine, apair of spaced vertical standards having their upper ends inturned and in spaced opposed relation, a power cylinder supported vertically between said upper ends, a piston and piston rod working in said cylinder, said rod extending through the lower end thereof, a die table positioned between said standards be"- neath said cylinder, a pair of toggle arms positioned above said table and having their outer ends pivotally connected to said standards and their inner ends slidably and pivotally connected to said piston rod, punch members pivotally secured to said toggle arms for vertical reciprocation above said table upon actuation of said piston and piston rod, said toggle arms having a plurality of longitudinally extending apertures therethrough for the adjustment of said punches longitudinally of said table.

3. In a punching machine, a pair of spaced vertical standards having their upper ends inturned and in spaced opposed relation, a power cylinder supported vertically between said upper ends, a piston and piston rod working in said cylinder, said rod extending through the lower end thereof, a die table positioned between said standards beneath said cylinder, a pair of toggle arms positioned above said table and having their outer ends pivotally connected to said standards and their inner ends slidably and pivotally connected to said piston rod, punch members pivotally secured to said toggle arms for vertical reciprocation above said table upon actuation of said piston and ends inturned and in spaced opposed relation, a power cylinder supported vertically between said upper ends, a piston and piston rod working in said cylinder, said rod extending through the lower end thereof, a die table positioned between said standards beneath said cylinder, a pair of toggle arms.

positioned above said table and having their outer ends pivotally connected to said standards and their. inner ends slid-ably and pivotally connected tosaid piston rod, punch members pivotally. secured to said. toggle arms for vertical reciprocation above said table upon actuation of said piston and piston rod, said'toggle arms having a plurality of longitudinally extending apertures there-through for the adjustment of said punches longitudinally of said table, and a hickey punch carried upon the end of said 1,saa,aaa

piston rod adapted to act upon the worksimultaneously with said arm carried punches.

5. 'In a punching machine having means i for reciprocating the opposed connected inner -ends .of-a pair of pivoted toggle arms, a shear punch comprising, a relatively broad and substantially elongated member having one end bifurcated for engagement over one of said arms for pivotal connection therewith and further having its other end pro.- vided with a substantially V-shaped slot to provide a pair. of pointed cutting members, and means for pivotally securing one of said arms between the furcations of one of said bifurcated ends.

hereto.

JOHN w. KILLINGsWO 'rI-I. 

